The new SharePoint Admin Center has been in preview since being announced at Ignite 2017. Now we have a date for wider release! From the Office 365 Roadmap, we have details with the Targeted release rollout:

"The new SharePoint Admin Center experience is rolling out to First Release customers beginning on January 22, 2018."

Yes, I think you are right. Hopefully, though, we get some sort of timeline when it hits TR, so it's not so much up in the air. For stuff like user profiles and search management, currently not part of the new SPO Admin Center experience yet.